package com.webserver.http;

import java.util.HashMap;
import java.util.Map;

/**
 * 当前类用于定义所有HTTP协议规定之内容，可被复用。
 */
public class HttpContext {
    /**
     * 回车符
     */
    public static final char CR = 13;
    /**
     * 换行符
     */
    public static final char LF = 10;

    /**
     * 资源后缀与MIME类型的对应关系
     * key:资源的后缀名 例如:png
     * value:MIME类型  例如:image/png
     */
    private static Map<String,String> mimeMapping = new HashMap<>();

    static{
        initMimeMapping();
    }

    private static void initMimeMapping(){
        mimeMapping.put("html","text/html");
        mimeMapping.put("css","text/css");
        mimeMapping.put("js","application/javascript");
        mimeMapping.put("gif","image/gif");
        mimeMapping.put("jpg","image/jpeg");
        mimeMapping.put("png","image/png");
    }

    /**
     * 根据资源后缀名获取对应的MIME类型
     * @param ext
     * @return
     */
    public static String getMimeType(String ext){
        return mimeMapping.get(ext);
    }

    public static void main(String[] args) {
        System.out.println(getMimeType("png"));
    }
}







